Pen



FIG. 1 is a front left perspective view of a pen showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a rear elevational view thereof;

FIG. 8 is a front elevational view of the pen shown in FIG. 1 with the pen cap removed and placed on the opposite end of the pen;

FIG. 9 is a front elevational view of the pen shown in FIG. 1, with the pen cap removed and placed on the opposite end of the pen showing an alternative nib;

FIG. 10 is a front right perspective view of the pen cap shown in FIG. 1, shown separate from the body of the pen for convenience of illustration; and,

FIG. 11 is a perspective view of the body of the pen shown in FIG. 1 with the nib and cap removed for convenience of illustration.

The broken line showing of the nibs in FIGS. 8 and 9 is included for the purpose of illustrating environment and forms no part of the claimed design. 

The ornamental design for a pen, as shown and described. 